It'll be your smoothing groups, or lack of - if you have a mesh with just 1 smoothing group then it will look exactly as you have it - Blitz will attempt to shade smoothly across all polys, resulting in a mess.
Simply apply nice clean smoothing groups to cure the problem - in Max do it manually or apply an autosmooth modifier with the angle set to 45degrees or less and then you'll find it will look perfect in B3D.
I assume other modellers have smoothing groups also, AC3D certainly has, which is my preferred cheap modeller.
Simply apply nice clean smoothing groups to cure the problem - in Max do it manually or apply an autosmooth modifier with the angle set to 45degrees or less and then you'll find it will look perfect in B3D.
I assume other modellers have smoothing groups also, AC3D certainly has, which is my preferred cheap modeller.